This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
The exact historical development of 蒁 is uncertain. It visually combines 艹 (grass) with 述, but the original semantic and phonetic roles are unclear.
With the grass radical 艹 over 述, imagine a plant whose name or use is described in words, but the exact meaning remains hidden like an overgrown path.
For シュツ, picture a rare plant that shoots up suddenly: shoots -> シュツ, and the grass radical 艹 hints at the plant.
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